Remove Polymer 0.5.

third_party/polymer/components/core-list/core-list.css

Index: third_party/polymer/components/core-list/core-list.css
diff --git a/third_party/polymer/components/core-list/core-list.css b/third_party/polymer/components/core-list/core-list.css
deleted file mode 100644
index d938243c76b11634083cab2bb47eb8375c09cecf..0000000000000000000000000000000000000000
--- a/third_party/polymer/components/core-list/core-list.css
+++ /dev/null
@@ -1,27 +0,0 @@
-:host {
-  display: block;
-  outline: none;
-  position: relative;
-}
-
-polyfill-next-selector { content: '.core-list-viewport > *'; }
-::content > * {
-  position: absolute;
-  top: 0;
-  box-sizing: border-box;
-  opacity: 0;
-}
-
-polyfill-next-selector { content: ':host(:not([grid])) .core-list-viewport > *'; }
-:host(:not([grid])) ::content > * {
-  width: 100%;
-}
-
-.core-list-items.horizontal {
-  height: 100%;
-  white-space: nowrap;
-}
-
-.core-list-items.horizontal > * {
-  display: inline-block;
-}